Optical lens



FIG. 1 is a perspective view of an optical lens showing our new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left-side, elevational view thereof.

FIG. 5 is a right-side, elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing of the environment are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for an optical lens, as shown and described. 